A Florida teenager on probation for a mass shooting was rearrested after allegedly posting a video to his public Facebook page.

According to the Miami Herald, authorities believe Will Campbell, 18, went to a gun range with others on Jan 14, and later posted video of his trip on Facebook. In a clip from the gun range visit, Campbell allegedly boasts, “Check me out, head shots and all.”

Note: Video contains graphic content, viewer discretion advised.

In addition to not being allowed to possess a firearm, Campbell was also not allowed to leave his home. According to the Herald, Campbell is also seen on the tape wearing a GPS ankle monitor.

Campbell served nearly a year in prison for his role in a 2014 mass shooting at The Spot nightclub that left one teen critically wounded and more than a dozen injured, the Herald reports. The shooting was believed to be gang-related. Campbell served a year in prison after pleading guilty to one count of attempted second-degree murder before being placed on house arrest and probation.

According to the police report, a loaded gun and marijuana was found in Campbell’s bedroom when he was arrested in January for violating his probation.

Campbell’s attorney plans to mount a “vigorous defense” against the new charges, according to the Miami Herald.